×

Detection of sound activity

  • US 20020165713A1
  • Filed: 12/04/2001
  • Published: 11/07/2002
  • Est. Priority Date: 12/04/2000
  • Status: Active Grant
First Claim
Patent Images

1. A method for detecting speech activity for a signal, the method comprising the steps of:

  • extracting a plurality of features from the signal;

    modeling a first and a second probability density functions (PDFs) of the plurality of features, wherein;

    the first PDF models active speech conditions for the signal, and the second PDF models inactive speech conditions for the signal;

    adapting the first and second PDFs to respond to changes in the signal over time;

    probability-based classifying of the signal based, at least in part, on the plurality of features; and

    distinguishing speech in the signal based, at least in part, upon the probability-based classifying step.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×